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Finding the Fourth Proportional to 7,773.60, 10,729.84 and 5,291.04

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Solution

The fourth proportional to 7,773.60, 10,729.84 and 5,291.04 is: 7,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773.60 : 10,729.84 = 5,291.04 : x
  2. Step 2: Convert to fraction form
    7,773.60/10,729.84 = 5,291.04/x
  3. Step 3: Cross multiply
    7,773.60x = 10,729.84 × 5,291.04
  4. Step 4: Simplify right side
    7,773.60x = 56,772,012.63
  5. Step 5: Solve for x
    x = 56,772,012.63/7,773.60
  6. Step 6: Final answer
    x = 7,303.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.